Table 3.
Univariate and multivariate analyses (outcome=need for O2 therapy)
| Variable | Univariate logistic model |
Multivariate logistic modela) |
||||
|---|---|---|---|---|---|---|
| Crude OR | 95% CI | P value | Adjusted OR | 95% CI | P value | |
| Sex (ref. female) | ||||||
| Male | 1.102 | 0.557–2.181 | 0.78 | |||
| Birth weight | 1.204 | 0.529–2.737 | 0.658 | |||
| Gestational age | 0.898 | 0.666–1.21 | 0.478 | |||
| Siblings (ref. no) | ||||||
| Siblings (yes) | 3.235 | 1.385–7.556 | 0.007 | 2.898 | 1.207–6.957 | 0.017 |
| Weight at admission | 0.719 | 0.602–0.858 | <0.001 | 0.695 | 0.506–0.954 | 0.025 |
| Age at admission | 0.872 | 0.784–0.97 | 0.012 | 1.011 | 0.841–1.215 | 0.910 |
| Past history (ref. no) | ||||||
| Clinical history (yes) | 2.727 | 1.039–7.157 | 0.042 | 2.994 | 1.008–8.893 | 0.048 |
| Feeding type (BMF) | 0.052 | 0.039 | ||||
| MF | 1.976 | 0.625–6.247 | 0.246 | 1.905 | 0.577–6.29 | 0.290 |
| AMF | 3.500 | 1.163–10.536 | 0.026 | 3.807 | 1.218–11.898 | 0.021 |
OR, odds ratio; CI, confidence interval; BMF, breast milk feeding group; MF, mixed breast milk and formula feeding group; AMF, artificial milk formula feeding.
a)
In the multivariate logistic regression analysis, adjusted ORs for the need for oxygen between breast milk feeding groups are assessed after the adjustment for variables such as siblings, weight at admission, age at admission, and past history, which were significant in the univariate logistic regression analysis.